We had fun with rain and snow activities - we did painting, shaving cream, and blue milk for our rain day. Probably the most fun was washing the piggies in the water after they got shaving cream all over them.
We built snowmen another day and ate ice cream snowmen and milkshakes. Weston wouldn't eat the snowmen treats, so he got a milkshake. And he had to build a piggy snowman.
And since we never get snow around here, we had to make our own. You can make a fun snow-like substance with conditioner and baking soda. It really works pretty well. The kids had fun with it. Weston had to put his pigs in the snow, of course. Savannah played with polar bears in her snow.
I intended to do wind and ice days, but a couple of birthday parties got in the way... we just watched "Frozen" instead.